https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94482
--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #12)
> Reduced testcase (-O2 -msse2 -m32):
> typedef unsigned V __attribute__ ((__vector_size__ (16)));
> union U
> {
> V j;
> unsigned long long i __attribute__ ((__vector_size__ (16)));
> };
>
> static inline __attribute__((always_inline)) V
> foo (unsigned long long a)
> {
> union U z = { .j = (V) {} };
> for (unsigned long i = 0; i < 1; i++)
> z.i[i] = a;
> return z.j;
> }
>
> static inline __attribute__((always_inline)) V
> bar (V a, unsigned long long i, int q)
> {
> union U z = { .j = a };
> z.i[q] = i;
> return z.j;
> }
>
> int
> main ()
> {
> union U z = { .j = bar (foo (1729), 2, 1) };
> if (z.i[0] != 1729)
> __builtin_abort ();
> return 0;
> }
Ok, Jakub's version started to Abort with r7-987-gf17a223de829cb5f and can be
seen on current master.
